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NWCG Glossary of Wildland Fire (PMS 205)

Title Steward Status Definition
general cause CEPC Communication, Education, and Prevention Committee Approved

Agency or circumstance which started a fire or set the stage for its occurrence.

general construction

Activities related to the construction of residential, commercial, industrial buildings, infrastructure or civil engineering works.

general fire weather forecast FWS Fire Weather Subcommittee Approved

A forecast, issued daily during the regular fire season to resource management agencies, that is intended for planning of daily fire management activities, including daily staffing levels, prevention programs, and initial attack on wildfires.

General Origin Area (GOA) WFISC Wildland Fire Investigation Subcommittee Approved

The larger area where the fire first established itself and is identified by an analysis of the fire behavior context, macroscale fire pattern indicators, and witness statements.

General Schedule Employee IBC Incident Business Committee Approved

A regular federal government employee who is compensated under the General Schedule (GS) Pay Plan.

General Staff NIMSIC National Incident Management System Integration Committee Approved

A group of incident personnel organized according to function and reporting to the Incident Commander or Unified Command. The ICS General Staff consists of the Operations Section Chief, Planning Section Chief, Logistics Section Chief, Finance/Administration Section Chief.

general status (resource) IPSC Incident and Position Standards Committee Approved

Indicates whether the resource is available or unavailable to fill a capability request.

general winds FWS Fire Weather Subcommittee Approved

Large scale winds caused by high- and low-pressure systems but generally influenced and modified in the lower atmosphere by terrain.

geographic area NCSC National Coordination System Committee Approved

A boundary designated by governmental agencies (wildland fire protection agencies) within which they work together for the interagency, intergovernmental planning, coordination, and operations leadership for the effective utilization of emergency management resources within their area. There are ten geographic areas. A listing of the areas can be found in the National Interagency Mobilization Guide, Chapter 70 along with listings of the Geographic Coordinating Areas and Geographic Area Coordination Centers.

Geographic Area (GA) code NCSC National Coordination System Committee Approved

A code that identifies one of the wildland fire geographic areas.

Geographic Area (GA) name NCSC National Coordination System Committee Approved

The name of the geographic area that identifies a boundary designated by wildland fire protection agencies within which they work together for the interagency, intergovernmental planning, coordination, and operations leadership for the effective utilization of emergency management resources.

Geographic Area Coordinating Group (GACG) FMB Fire Management Board Approved

An interagency body of fire management representatives from each federal and state land management agency within a nationally recognized regional area that provides leadership and support to facilitate safe and efficient fire management activities. Working collaboratively, a GACG's mission is not only for wildland fire emergencies, but for other emergency incidents, as necessary.

Geographic Area Coordination Center (GACC) NCSC National Coordination System Committee, FMB Fire Management Board Approved

The physical location of an interagency, regional operation center for the effective coordination, mobilization and demobilization of emergency management resources. A coordination center serves federal, state and local wildland fire agencies through logistical coordination of resources throughout the geographic area, and with other geographic areas, as well. Listings of geographic coordination centers and their respective geographic coordinating areas can be found within the National Interagency Mobilization Guide. 

Geographic Area Coordination Center (GACC) code NCSC National Coordination System Committee Approved

Shortened form of Geographic Area Coordination Center name.

Geographic Area Coordination Center (GACC) name NCSC National Coordination System Committee Approved

The name of an interagency operations center that provides coordination, mobilization, and demobilization of emergency management resources within a specific geographic coordinating area.

Geographic Area Coordination Center boundary polygon In Development

A polygon depicting geographic area boundaries.

Geographic Area Coordination Center unit identifier Approved

NWCG Unit Identifier for GACC Boundary

geographic coordinating area NCSC National Coordination System Committee Approved

A boundary designated by governmental agencies (wildland fire protection agencies), that may coincide with a geographic area boundary or may be a subdivision of a geographic area within which they work together coordinating, for the effective, mobilization and demobilization of emergency management resources within their area. Listings of geographic coordinating areas and geographic coordination centers can be found in the National Interagency Mobilization Guide, Chapter 20, Section 21.1. 

Geographic Coordinating Area (GCA) code NCSC National Coordination System Committee Approved

A code representing a wildland fire geographic coordinating area.

Geographic Coordinating Area (GCA) name NCSC National Coordination System Committee Approved

The name of the wildland fire geographic coordinating area.

Geographic Information System Acres Approved

GIS calculated acres within the fire perimeter, not adjusted for unburned areas

geometry identifier Approved

Primary key for linking geospatial objects with other database systems.

Geostationary Operational Environmental Satellite (GOES) FDSC Fire Danger Subcommittee Approved

The satellite used for data relay from NFDRS weather stations to ASCADS.

getaway time IOSC Incident Operations Subcommittee Approved

Elapsed time from receipt of notification by the personnel charged with initiating suppression action to the departure of the first attack unit.

glass refraction/magnification CEPC Communication, Education, and Prevention Committee Superceded
glass refraction/magnifying glass

An ignition that occurs as the result of concave glass or reflective materials focusing sunlight creating intense heat.

glaucoma EMC Emergency Medical Committee Approved

A disease of the eye marked by increased pressure within the eyeball that can result in damage to the optic disk and gradual loss of vision.

Global Positioning System (GPS) NCSC National Coordination System Committee Approved

A system of navigational satellites operated by the U.S. Department of Defense and available for civilian use. The system can track objects anywhere in the world with an accuracy of approximately 40 feet.

glowing combustion FUSC Fire Use Subcommittee Approved

The process of oxidation of solid fuel accompanied by incandesence. All volatiles have already been driven off, oxygen reaches the combustion surfaces, and there is no visible smoke. This phase follows the smoldering combustion phase and continues until the temperature drops below the combustion threshold value, or until only non-combustible ash remains. 

glowing combustion phase FUSC Fire Use Subcommittee Approved

The final phase of combustion following flaming and smoldering phases.

going fire IOSC Incident Operations Subcommittee Approved

Any wildfire on which suppression action has not reached an extensive mop up stage.

government vehicle IBC Incident Business Committee Approved

A vehicle owned by, on loan to, leased or rented by the government.

government/tribal activities CEPC Communication, Education, and Prevention Committee Superceded

Activities and/or treatments conducted as part of official government operations.

government/tribal operations
gradient wind (flow) FWS Fire Weather Subcommittee Approved

Wind flowing parallel to pressure isobars or contours with low pressure on the left of the observer in the Northern Hemisphere; velocity such that the pressure gradient, Coriolis, and centrifugal force acting in the area are in balance.

gradient wind (weather system) FWS Fire Weather Subcommittee Approved

Wind created by differing barometric pressures between high- and low-pressure systems. Velocity is generally five to 30 miles per hour, and wind shifts are usually gradual as systems move and shift.

Graphic Scale (GS) IPSC Incident and Position Standards Committee Approved

A graphic scale is a line marked off on a map which compares map distances to the ground distance in "different" units of measurements.

grass fire FBSC Fire Behavior Subcommittee Approved

Any fire in which the predominant fuel is grass or grasslike.

grass type FDSC Fire Danger Subcommittee Approved

In NFDRS, the two grass types (annual, perennial) determine how seasonal drying of live herbaceous fuels is modeled.

gravimetric FWS Fire Weather Subcommittee Approved

Of, or pertaining to, measurement by weight.

gravity tank ETC Equipment Technology Committee Approved

Water storage tank for fire protection and sometimes community water service that supplies water by gravity pressure.

green-up FDSC Fire Danger Subcommittee Approved

Green-up for the 1978 version of NFDRS model is defined as the beginning of a new cycle of plant growth. Green-up usually occurs once a year, except in desert areas where rainy periods can produce a flush of new growth more than once a year. Green-up may be signaled at different dates for different fuel models. Green-up should not be started when the first flush of green occurs in the area. Instead, the vegetation that will be the fire problem (represented by the NFDRS fuel model associated with the weather station) when it matures and cures should be identified. Green-up should start when the majority of this vegetation starts to grow. 

greenbelt WUIMC Wildland Urban Interface Mitigation Committee Archived

Landscaped and regularly maintained fuel break, usually put to some additional use (e.g., golf course, park, playground).

greenhouse effect FWS Fire Weather Subcommittee Approved

The heating of the earth's surface by both atmospheric infrared radiation and incoming solar radiation.

greenness factor FDSC Fire Danger Subcommittee Approved

In the 1988 version of NFDRS, a code scaled from 0 to 20 representing the greenness of grasses and shrubs from near dead to maximum greenness.

grid ignition technique FUSC Fire Use Subcommittee Approved

Method of igniting prescribed fires in which ignition points are set individually at predetermined spacing with predetermined timing throughout the area to be burned.

grid search technique WFISC Wildland Fire Investigation Subcommittee Approved

A search technique typically dividing into squares the specific origin area and ignition area of a wildland fire to systematically search for microscale fire pattern indicators and evidence.

gridding IOSC Incident Operations Subcommittee Approved

To search for a small fire by systematically traveling over an area on parallel courses or gridlines.

Gross Axle Weight Rating (GAWR) ETC Equipment Technology Committee Approved

The value specified by the manufacturer as the maximum allowable weight placed on an axle of a vehicle when fully equipped, including payload, fluids and occupants.

Gross Vehicle Weight (GVW) ETC Equipment Technology Committee Approved

Actual vehicle weight, including chassis, body, cab, equipment, water, fuel, crew, and all other load.

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